Features: The chargerinput voltage is 30V-100V. Output voltage 5V, current1A. Suitable for charging all mobile phones. Standard USBinterface, with the computer USB2.0interface. Combined with standard output USB port of the new phonecharger. It can becharged in the operation of the electric vehicle, charging while riding, and no longer have to worry about riding to listen to music and call out of electricity. With a voltmeter, real-time monitoring of electric vehicle battery voltage, no longer worry about notseeing the voltage! Specifications: Material: Plastic Input Voltage: DC30-100V Suitable for Battery 36V/48V/60V/72V/84V Operating Temperature: -10~60° C The Measurement Accuracy: Better Than 0.5% Output Voltage: DC5.0V StaticCurrent: 10mA MaximumOutput Current: 1.0A Size: Approx. 6x4.3x2.9cm/2.36x1.69x1.14in Color: Red/Green Package Includes: 1x Voltmeter note: The input voltagerange is extended to 30-200V, suitable for 36-120V battery ebike. Can not see clearly under the strong sunlight, must beseen in shadow, please buy carefully. It is not suitable for use on electric tricycles with reverse, because the moment of switching reverse will produce a very high inductive voltage, which the modulecan notwithstand. Any metal in the ebike should not come into contact with the metal heat sink of the voltmeter, otherwise it will short circuit and smoke.